Doing a favor for CIA Director Suri Nance (Laila Robins) goes awry for McCall when she tries to locate a missing British mathematician and finds herself embroiled in an international fight for a revolutionary financial technology.
When a drug bust points to dirty cops, Frank decides not to involve Internal Affairs in the hopes of taking down and exposing the Blue Templar.
In order to save Eddie's chance at parole, Evan attempts to curry favor with his newfound grandfather at the horse races, but his luck runs out when he and Hank discover the real reason they've never met Ted.
Libby's mothers call on Hank after an accident leaves one with a wound that won't heal. Also, Evan proposes to Paige. Guest-starring Julie Benz and Brooke D’Orsay.
